Is predicted to encode a protein with the following domains: Immunoglobulin I-set domain; RCSD; Immunoglobulin I-set; Immunoglobulin-like fold; Immunoglobulin subtype 2; Immunoglobulin-like domain superfamily; Immunoglobulin V-set domain; Immunoglobulin subtype; and RCSD region. Is an ortholog of C. elegans unc-89. In C. elegans, unc-89 is involved in several processes, including myofibril assembly; pharyngeal gland morphogenesis; and regulation of striated muscle contraction.